UPDATE 
  cscart_multi_declock_keys 
SET 
  expiry_at = UNIX_TIMESTAMP(NOW()) + 30, 
  token = 'RokF/yTZbZEawEih/4MymcHF5YneP8whHiWxMi242Rg=' 
WHERE 
  key_id = '4b78e9e38048d2a641263ce400c0f1bba7fc52d42a678f0870807b3dea370e39' 
  AND (
    token = 'RokF/yTZbZEawEih/4MymcHF5YneP8whHiWxMi242Rg=' 
    OR expiry_at <= UNIX_TIMESTAMP(NOW())
  )