QUERY PLAN
Limit (cost=0.42..210.13 rows=1 width=28)
-> Index Scan Backward using tbl_client_am_change_logs_pkey on tbl_client_am_change_logs (cost=0.42..6711.23 rows=32 width=28)
Filter: ((sales_rep IS NULL) AND (end_at IS NULL) AND (client_id = 2128))