QUERY PLAN
Limit (cost=5.94..5.98 rows=18 width=247)
-> Sort (cost=5.94..5.98 rows=18 width=247)
Sort Key: system DESC, created_at, id
-> Seq Scan on tbl_auth_items (cost=0.00..5.56 rows=18 width=247)
Filter: (visible AND (type = 1))