SELECT 
  * 
FROM 
  cscart_product_options_exceptions 
WHERE 
  product_id = 61337 
ORDER BY 
  exception_id

Query time 0.00021

JSON explain

{
  "query_block": {
    "select_id": 1,
    "table": {
      "table_name": "cscart_product_options_exceptions",
      "access_type": "ref",
      "possible_keys": ["product"],
      "key": "product",
      "key_length": "3",
      "used_key_parts": ["product_id"],
      "ref": ["const"],
      "rows": 5,
      "filtered": 100,
      "attached_condition": "cscart_product_options_exceptions.product_id <=> 61337"
    }
  }
}

Result

exception_id product_id combination
47843 61337 a:2:{i:22901;s:6:"227906";i:22949;s:6:"228542";}
47844 61337 a:2:{i:22901;s:6:"227906";i:22949;s:6:"228543";}
47845 61337 a:2:{i:22901;s:6:"227906";i:22949;s:6:"228544";}
66703 61337 a:2:{i:22901;s:6:"227906";i:22949;s:6:"228545";}
66704 61337 a:2:{i:22901;s:6:"227906";i:22949;s:6:"228546";}