UPDATE 
  cscart_lock_keys 
SET 
  expiry_at = UNIX_TIMESTAMP(NOW()) + 30, 
  token = 'Qg8WAMGH/Y8rV0tYTg+x3pXZ80J9FBD/uepwT42o4Ck=' 
WHERE 
  key_id = 'a4eb63a5a58d7458d42a3b31704439fb8a2b7aa66668d924922b789a1f08b2ac' 
  AND (
    token = 'Qg8WAMGH/Y8rV0tYTg+x3pXZ80J9FBD/uepwT42o4Ck=' 
    OR expiry_at <= UNIX_TIMESTAMP(NOW())
  )

Query time 0.00037