QUERY PLAN
Aggregate (cost=5031.60..5031.61 rows=1 width=8)
-> Gather (cost=1000.00..5031.60 rows=1 width=0)
Workers Planned: 1
-> Parallel Seq Scan on tbl_unread_comments (cost=0.00..4031.50 rows=1 width=0)
Filter: (((object_type)::text = '20028'::text) AND (object_id = 6) AND (remind_user_id = 1001))