UPDATE 
  cscart_lock_keys 
SET 
  expiry_at = UNIX_TIMESTAMP(NOW()) + 30, 
  token = 'S6wn4alHMZtsqg2KQJg6JxY2f94mjyooFbKvRrXFMMU=' 
WHERE 
  key_id = '51ad51e04405c592b9513b18b875421ff557915886155fb503dc004a2739ca9f' 
  AND (
    token = 'S6wn4alHMZtsqg2KQJg6JxY2f94mjyooFbKvRrXFMMU=' 
    OR expiry_at <= UNIX_TIMESTAMP(NOW())
  )