Sandbox

SELECT 
  cscart_settings_objects.object_id as object_id, 
  cscart_settings_objects.type as object_type, 
  cscart_settings_objects.name as description, 
  IF(
    cscart_settings_vendor_values.value IS NULL, 
    cscart_settings_objects.value, 
    cscart_settings_vendor_values.value
  ) as value 
FROM 
  cscart_settings_objects 
  LEFT JOIN cscart_settings_vendor_values ON cscart_settings_vendor_values.object_id = cscart_settings_objects.object_id 
  AND company_id = 1 
WHERE 
  1 
  AND (
    FIND_IN_SET(
      'ROOT', cscart_settings_objects.edition_type
    ) 
    OR FIND_IN_SET(
      'VENDOR', cscart_settings_objects.edition_type
    ) 
    OR FIND_IN_SET(
      'ULT:ROOT', cscart_settings_objects.edition_type
    ) 
    OR FIND_IN_SET(
      'ULT:VENDOR', cscart_settings_objects.edition_type
    )
  ) 
  AND cscart_settings_objects.object_id = 0 
ORDER BY 
  cscart_settings_objects.position

Query time 0.00067

JSON explain

{
  "query_block": {
    "select_id": 1,
    "table": {
      "message": "Impossible WHERE noticed after reading const tables"
    }
  }
}