UPDATE 
  cscart_multi_declock_keys 
SET 
  expiry_at = UNIX_TIMESTAMP(NOW()) + 30, 
  token = '6jkINNaOE7fgdjmZHEViYBalqEU7MMp99zLw6z+UxJg=' 
WHERE 
  key_id = '7177ddd4a45d515c5faea57b27afa1b1bd0dbf9988eaa2e0e9230286c98d8b77' 
  AND (
    token = '6jkINNaOE7fgdjmZHEViYBalqEU7MMp99zLw6z+UxJg=' 
    OR expiry_at <= UNIX_TIMESTAMP(NOW())
  )