UPDATE 
  cscart_lock_keys 
SET 
  expiry_at = UNIX_TIMESTAMP(NOW()) + 30, 
  token = 'PTBpBUlAwDOkh3pKJxlJCZGE9P75gKVsGI+AhtrDwpU=' 
WHERE 
  key_id = 'e6b47bd27293606f5be95a800e418ae8260a4ddec60dbd5cee8f8542992f1e08' 
  AND (
    token = 'PTBpBUlAwDOkh3pKJxlJCZGE9P75gKVsGI+AhtrDwpU=' 
    OR expiry_at <= UNIX_TIMESTAMP(NOW())
  )

Query time 0.00030