Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '21476b60faf261d2d843b690a50375a545a60167c4d7fceef9faa9c97cef14a2' 
  AND token = 'ZiLITTjI8LL/2pMmVBnpC3frEAQEkLvfHU/8I8g/+Ew=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00022

JSON explain

{
  "query_block": {
    "select_id": 1,
    "message": "no matching row in const table"
  }
}