UPDATE 
  cscart_lock_keys 
SET 
  expiry_at = UNIX_TIMESTAMP(NOW()) + 30, 
  token = 'zi6ZYsnbUtvze2lr9kHnUFm5t83ca01IWoSlraQ/rHE=' 
WHERE 
  key_id = '50f587d5a408fc1440e32031b9cfef2dc54bbb763bf267d07fc15e2515703e08' 
  AND (
    token = 'zi6ZYsnbUtvze2lr9kHnUFm5t83ca01IWoSlraQ/rHE=' 
    OR expiry_at <= UNIX_TIMESTAMP(NOW())
  )