QUERY PLAN
Aggregate (cost=5793.88..5793.89 rows=1 width=8)
-> Sort (cost=5793.87..5793.87 rows=1 width=243)
Sort Key: tbl_comments.created_at DESC
-> Gather (cost=1000.00..5793.86 rows=1 width=243)
Workers Planned: 2
-> Parallel Seq Scan on tbl_comments (cost=0.00..4793.76 rows=1 width=243)
Filter: ((parent IS NULL) AND ((object_type)::text = '7'::text) AND (object_id = 3843))