Оптимизация запроса

SELECT DISTINCT ON("tag"."id") "tag"."id" AS tag_id,
                "city"."id" AS city_id,
                "city"."name" AS city_name,
                "city"."state_short_name" AS state_short_name,
                "tag"."name_singular" AS tag_name_singular,
                "tag"."name_plural" AS tag_name_plural
FROM "tag_organization"
INNER JOIN "tag" ON "tag"."id" = "tag_organization"."tag_id"
AND "tag_organization"."tag_id" IN (41020,
                                    175458)
INNER JOIN "organization" ON organization.id=organization_id
INNER JOIN
  (SELECT city.id,
          city.name,
          city.state_short_name
   FROM city
   WHERE city.id != '1017900'
   ORDER BY "city"."location" <-> st_setsrid(ST_GeomFromText('POINT (-83.7340729999999951 42.7927109999999971)'),4326) LIMIT 5500) city ON (organization.city_id = city.id) LIMIT 10;

Limit  (cost=1.56..985.00 rows=10 width=42)
  ->  Unique  (cost=1.56..61663.14 rows=627 width=42)
        ->  Nested Loop  (cost=1.56..61661.57 rows=627 width=42)
              Join Filter: (organization.city_id = city.id)
              ->  Nested Loop  (cost=1.28..9330.41 rows=627 width=30)
                    ->  Nested Loop  (cost=0.85..4065.99 rows=627 width=30)
                          ->  Index Only Scan using tag_organization_tag_id_organization_id_key1 on tag_organization  (cost=0.43..19.84 rows=627 width=8)
                                Index Cond: (tag_id = ANY ('{41020,175458}'::integer[]))
                          ->  Index Scan using tag_pkey1 on tag  (cost=0.42..6.44 rows=1 width=26)"
                                Index Cond: (id = tag_organization.tag_id)
                    ->  Index Scan using organization_pkey1 on organization  (cost=0.43..8.39 rows=1 width=8)
                          Index Cond: (id = tag_organization.organization_id)
              ->  Materialize  (cost=0.28..617.41 rows=5500 width=16)
                    ->  Subquery Scan on city  (cost=0.28..589.91 rows=5500 width=16)
                          ->  Limit  (cost=0.28..534.91 rows=5500 width=48)
                                ->  Index Scan using city_location_id on city city_1  (cost=0.28..3190.79 rows=32822 width=48)
                                      Order By: (location <-> '0101000020E61000001AF8510DFBEE54C0F816D68D77654540'::geometry)
                                      Filter: (id <> 1017900)

Nested Loop  (cost=22.11..56.30 rows=2 width=42) (actual time=0.608..0.690 rows=2 loops=1)
  ->  Index Scan using tag_pkey1 on tag  (cost=0.42..12.88 rows=2 width=26) (actual time=0.015..0.028 rows=2 loops=1)
        Index Cond: (id = ANY ('{41020,175458}'::integer[]))
  ->  Limit  (cost=21.69..21.69 rows=1 width=48) (actual time=0.326..0.326 rows=1 loops=2)
        ->  Sort  (cost=21.69..21.69 rows=1 width=48) (actual time=0.324..0.324 rows=1 loops=2)
              Sort Key: ((city.location <-> '0101000020E61000001AF8510DFBEE54C0F816D68D77654540'::geometry))
              Sort Method: quicksort  Memory: 25kB
              ->  Nested Loop  (cost=1.15..21.68 rows=1 width=48) (actual time=0.068..0.305 rows=10 loops=2)
                    ->  Nested Loop  (cost=0.86..21.35 rows=1 width=4) (actual time=0.029..0.184 rows=10 loops=2)
                          ->  Index Only Scan using tag_organization_tag_id_organization_id_key1 on tag_organization  (cost=0.43..12.89 rows=1 width=4) (actual time=0.015..0.035 rows=10 loops=2)
                                Index Cond: ((tag_id = ANY ('{41020,175458}'::integer[])) AND (tag_id = tag.id))
                                Heap Fetches: 21
                          ->  Index Scan using organization_pkey1 on organization  (cost=0.43..8.45 rows=1 width=8) (actual time=0.012..0.013 rows=1 loops=21)
                                Index Cond: (id = tag_organization.organization_id)
                    ->  Index Scan using city_pkey1 on city  (cost=0.29..0.31 rows=1 width=48) (actual time=0.007..0.008 rows=1 loops=21)
                          Index Cond: (id = organization.city_id)
                          Filter: (id <> 1017900)
                          Rows Removed by Filter: 0
Total runtime: 0.788 ms