UPDATE 
  cscart_lock_keys 
SET 
  expiry_at = UNIX_TIMESTAMP(NOW()) + 30, 
  token = 'au8G18xyDPRIiEWVMl5MfCZ/6+qYo7HBtuYSjghOkhg=' 
WHERE 
  key_id = '815112a3493b4e53f31071e635f7a7fc10370219a9f6734647576e098e2e234e' 
  AND (
    token = 'au8G18xyDPRIiEWVMl5MfCZ/6+qYo7HBtuYSjghOkhg=' 
    OR expiry_at <= UNIX_TIMESTAMP(NOW())
  )