UPDATE 
  cscart_lock_keys 
SET 
  expiry_at = UNIX_TIMESTAMP(NOW()) + 30, 
  token = 'unA8/LW1/S6IDkWqt0vLCSjLhcz5kgpCpiIx6PplE44=' 
WHERE 
  key_id = '4939a24da7b31949ee2ee87cb261e5c7ddac7b3a7974f4fcde3e6355ebfada91' 
  AND (
    token = 'unA8/LW1/S6IDkWqt0vLCSjLhcz5kgpCpiIx6PplE44=' 
    OR expiry_at <= UNIX_TIMESTAMP(NOW())
  )