UPDATE 
  cscart_lock_keys 
SET 
  expiry_at = UNIX_TIMESTAMP(NOW()) + 30, 
  token = 'XpCqWv5bbkOlRC/Wxln1WjGOLzXxudrQyb4iA9YEqOg=' 
WHERE 
  key_id = '50b6b433cb14087d1b01c56ed5776d1d972123a8e353dc444b084c7be96d7818' 
  AND (
    token = 'XpCqWv5bbkOlRC/Wxln1WjGOLzXxudrQyb4iA9YEqOg=' 
    OR expiry_at <= UNIX_TIMESTAMP(NOW())
  )