UPDATE 
  cscart_lock_keys 
SET 
  expiry_at = UNIX_TIMESTAMP(NOW()) + 30, 
  token = 'RZ1jhJKIQEaERm9FaZGJpYp5gYAl5uYUaXc6u3pGG+M=' 
WHERE 
  key_id = 'a5f258336e2e606df3b0e62261bc45e9f3a44d222864a32f72b8107e39b1dc9b' 
  AND (
    token = 'RZ1jhJKIQEaERm9FaZGJpYp5gYAl5uYUaXc6u3pGG+M=' 
    OR expiry_at <= UNIX_TIMESTAMP(NOW())
  )

Query time 0.00034