UPDATE 
  cscart_lock_keys 
SET 
  expiry_at = UNIX_TIMESTAMP(NOW()) + 30, 
  token = '/3kgCkUNzbau7aWIdgoMMVN0qjeUA0OkBfenpBqbZaE=' 
WHERE 
  key_id = '54c657cdeb1dfe37b423e4016f2fb2929447e1ac5d9864d7c0ce4035106d5fa4' 
  AND (
    token = '/3kgCkUNzbau7aWIdgoMMVN0qjeUA0OkBfenpBqbZaE=' 
    OR expiry_at <= UNIX_TIMESTAMP(NOW())
  )

Query time 0.00042