QUERY PLAN
Limit (cost=9.48..9.53 rows=20 width=250)
-> Sort (cost=9.48..9.53 rows=20 width=250)
Sort Key: system DESC, created_at, id
-> Seq Scan on tbl_auth_items (cost=0.00..9.05 rows=20 width=250)
Filter: (visible AND (type = 1))