Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '2f8271f76e354ed2b784b350ca5f027434135fe468d97504b64a450d749dbabb' 
  AND token = 'dmHZYRaNWxCy4K13zgy2WR43CfXPwmhPxAQ1QAS5sso=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00033

JSON explain

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