UPDATE 
  cscart_lock_keys 
SET 
  expiry_at = UNIX_TIMESTAMP(NOW()) + 300, 
  token = 'A6YrA4Eypx6pnRj1bnHPTieCT9x2b35LV7qou8EXGMY=' 
WHERE 
  key_id = '647099b8e2b600ca22ad67adab5ca3fc9772423033d0d32a63f864b05ad12be3' 
  AND (
    token = 'A6YrA4Eypx6pnRj1bnHPTieCT9x2b35LV7qou8EXGMY=' 
    OR expiry_at <= UNIX_TIMESTAMP(NOW())
  )