altmos_beta=# explain analyze SELECT ST_AsGeoJSON(renovation_house.center) AS center
FROM renovation_house
WHERE (ST_Contains('POLYGON((56.056702371098076 38.60595703125,56.056702371098076 36.62841796875001, 55.43836325152422 36.62841796875001,55.43836325152422 38.60595703125, 56.056702371098076 38.60595703125))', renovation_house.center)); Bitmap Heap Scan on renovation_house  (cost=4.22..48.12 rows=3 width=32) (actual time=3.596..87.040 rows=8817 loops=1)
   Recheck Cond: ('0103000000010000000500000067BCF60542074C4000000000904D434067BCF60542074C4001000000705042404A887A491CB84B4001000000705042404A887A491CB84B4000000000904D434067BCF60542074C4000000000904D434
0'::geometry ~ center)
   Filter: _st_contains('0103000000010000000500000067BCF60542074C4000000000904D434067BCF60542074C4001000000705042404A887A491CB84B4001000000705042404A887A491CB84B4000000000904D434067BCF60542074C40000000009
04D4340'::geometry, center)
   Heap Blocks: exact=1087
   ->  Bitmap Index Scan on center_house_index  (cost=0.00..4.22 rows=9 width=0) (actual time=3.251..3.251 rows=8817 loops=1)
         Index Cond: ('0103000000010000000500000067BCF60542074C4000000000904D434067BCF60542074C4001000000705042404A887A491CB84B4001000000705042404A887A491CB84B4000000000904D434067BCF60542074C4000000000904
D4340'::geometry ~ center)
 Planning time: 0.338 ms
 Execution time: 88.655 ms