QUERY PLAN
Aggregate (cost=17.83..17.84 rows=1 width=8)
-> Sort (cost=17.82..17.82 rows=1 width=159)
Sort Key: tbl_object_change_logs.created_at DESC
-> Seq Scan on tbl_object_change_logs (cost=0.00..17.80 rows=1 width=159)
Filter: ((object_id = 8) AND (object_type = '7'::smallint))