SELECT 
  * 
FROM 
  cscart_product_options_exceptions 
WHERE 
  product_id = 10183 
ORDER BY 
  exception_id

Query time 0.00040

Explain
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE cscart_product_options_exceptions ref product product 3 const 2 Using where; Using filesort

Result

exception_id product_id combination
3563 10183 a:2:{i:1072;s:5:"20423";i:1074;s:5:"20439";}
3592 10183 a:2:{i:1072;s:5:"20419";i:1074;s:2:"-1";}