UPDATE 
  cscart_lock_keys 
SET 
  expiry_at = UNIX_TIMESTAMP(NOW()) + 30, 
  token = 'ui7/o6EwRmcCiDuTDmzpmuTGiloA7UF6wemDDsXRpX4=' 
WHERE 
  key_id = '19efd3e32747a55692c4d66e80f423009348af0a1cf70dfd04a845149156db19' 
  AND (
    token = 'ui7/o6EwRmcCiDuTDmzpmuTGiloA7UF6wemDDsXRpX4=' 
    OR expiry_at <= UNIX_TIMESTAMP(NOW())
  )

Query time 0.00033