UPDATE 
  cscart_multi_declock_keys 
SET 
  expiry_at = UNIX_TIMESTAMP(NOW()) + 30, 
  token = '8HJTGBaOjCYz1zqCQlOIh8IMmWl5VF4q8pDGHsrvkvg=' 
WHERE 
  key_id = '918b87b09876e72993f37e8f503eea466f6c490b4c396e37055c59c0ea5cf608' 
  AND (
    token = '8HJTGBaOjCYz1zqCQlOIh8IMmWl5VF4q8pDGHsrvkvg=' 
    OR expiry_at <= UNIX_TIMESTAMP(NOW())
  )