QUERY PLAN
Limit (cost=7125.61..7125.62 rows=1 width=153)
-> Sort (cost=7125.61..7125.62 rows=1 width=153)
Sort Key: created_at DESC
-> Gather (cost=1000.00..7125.60 rows=1 width=153)
Workers Planned: 2
-> Parallel Seq Scan on tbl_comments (cost=0.00..6125.50 rows=1 width=153)
Filter: ((parent IS NULL) AND ((object_type)::text = '20031'::text) AND (object_id = 7))