UPDATE 
  cscart_lock_keys 
SET 
  expiry_at = UNIX_TIMESTAMP(NOW()) + 30, 
  token = 'Rb1UdtbKDProtR72lpvTUdq6ix0yM8AWTF1gq68qhnQ=' 
WHERE 
  key_id = '50e874364114c5256fef16d4344dbce901207327b60aaf8a7b6f086d49e98638' 
  AND (
    token = 'Rb1UdtbKDProtR72lpvTUdq6ix0yM8AWTF1gq68qhnQ=' 
    OR expiry_at <= UNIX_TIMESTAMP(NOW())
  )