Bitmap Heap Scan on sales (actual time=0.128..0.373 rows=341 loops=1)
  Recheck Cond: (point(date_part('epoch'::text, (dt)::timestamp without time zone), (sum)::double precision) <@ '(1703980800,20000),(1701388800,10000)'::box)
  Heap Blocks: exact=338
  Buffers: shared hit=357
  ->  Bitmap Index Scan on sales_point_spgist (actual time=0.091..0.091 rows=341 loops=1)
        Index Cond: (point(date_part('epoch'::text, (dt)::timestamp without time zone), (sum)::double precision) <@ '(1703980800,20000),(1701388800,10000)'::box)
        Buffers: shared hit=19

Scan Table sales

"Bitmap Heap Scan on sales (actual time=0.128..0.373 rows=341 loops=1)"
"  Recheck Cond: (point(date_part('epoch'::text, (dt)::timestamp without time zone), (sum)::double precision) <@ '(1703980800,20000),(1701388800,10000)'::box)"
"  Heap Blocks: exact=338"
"  Buffers: shared hit=357"
"  ->  Bitmap Index Scan on sales_point_spgist (actual time=0.091..0.091 rows=341 loops=1)"
"        Index Cond: (point(date_part('epoch'::text, (dt)::timestamp without time zone), (sum)::double precision) <@ '(1703980800,20000),(1701388800,10000)'::box)"
"        Buffers: shared hit=19"