UPDATE 
  cscart_lock_keys 
SET 
  expiry_at = UNIX_TIMESTAMP(NOW()) + 30, 
  token = '+Hv8LsGAwZrZsXas1G6tHsPO2xOJa6IP0lroPBqUL8c=' 
WHERE 
  key_id = '876698f0fefe65b7175bf201989364ee68b9e00aace232c7dab20070f489f54e' 
  AND (
    token = '+Hv8LsGAwZrZsXas1G6tHsPO2xOJa6IP0lroPBqUL8c=' 
    OR expiry_at <= UNIX_TIMESTAMP(NOW())
  )