UPDATE 
  cscart_lock_keys 
SET 
  expiry_at = UNIX_TIMESTAMP(NOW()) + 30, 
  token = 'DjOzSTyjeW1dFt0sfvM7E/xwHMSH0/b9yfBPiXfOgig=' 
WHERE 
  key_id = '851f0b1f47360bf10326944347865d8c526e5bc768e419ac5402eb61df0f307d' 
  AND (
    token = 'DjOzSTyjeW1dFt0sfvM7E/xwHMSH0/b9yfBPiXfOgig=' 
    OR expiry_at <= UNIX_TIMESTAMP(NOW())
  )