SELECT 
  * 
FROM 
  cscart_product_options_inventory 
WHERE 
  product_id = 480 
  AND combination_hash = '1569750397'

Query time 0.00038

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
480 ODV-SSL-CK02-0000S 1569750397 859_17657 0.00 N 0 2421.14 26.00 0 0 1 0 126