SELECT 
  * 
FROM 
  cscart_product_options_inventory 
WHERE 
  product_id = 725 
  AND combination_hash = '1580905379'

Query time 0.00023

Explain
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE cscart_product_options_inventory const PRIMARY,pc PRIMARY 4 const 1

Result

product_id product_code combination_hash combination amount temp position price weight min_qty max_qty qty_step list_qty_count aval_status
725 ODF-AFOCAAA05101 1580905379 1184_22364_1173_22181_1186_22376 0.00 N 0 1400.00 3.00 0 0 0 0 25