UPDATE 
  cscart_lock_keys 
SET 
  expiry_at = UNIX_TIMESTAMP(NOW()) + 30, 
  token = '6oTjxggk6z+nA6+EnJqkeBBpxTCzwzu3mvkH3MV+THI=' 
WHERE 
  key_id = '703c52fc117ec9ee70a19fb19fadc4a5585952b44eb6bb84a003d637f31daed4' 
  AND (
    token = '6oTjxggk6z+nA6+EnJqkeBBpxTCzwzu3mvkH3MV+THI=' 
    OR expiry_at <= UNIX_TIMESTAMP(NOW())
  )