UPDATE 
  cscart_multi_declock_keys 
SET 
  expiry_at = UNIX_TIMESTAMP(NOW()) + 30, 
  token = '7q+OFFZnzakgh5VNXTLE3hKnk6T012Jvmw2X0RrEthI=' 
WHERE 
  key_id = '198771b8675c03ca0424b63f5801b3ffc46cb8de657fb391863cd0f0f0c6b254' 
  AND (
    token = '7q+OFFZnzakgh5VNXTLE3hKnk6T012Jvmw2X0RrEthI=' 
    OR expiry_at <= UNIX_TIMESTAMP(NOW())
  )