UPDATE 
  cscart_multi_declock_keys 
SET 
  expiry_at = UNIX_TIMESTAMP(NOW()) + 30, 
  token = 't6vdvVwbWJas8pNMkTVROwu2QBvuI3UPoeoZpL3HY1A=' 
WHERE 
  key_id = '402cfa4abbb9ffd5d214cd0bd7eb84c538614ae3f487e53d89181650d9fd7e5c' 
  AND (
    token = 't6vdvVwbWJas8pNMkTVROwu2QBvuI3UPoeoZpL3HY1A=' 
    OR expiry_at <= UNIX_TIMESTAMP(NOW())
  )