Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '71da21bda4360f1266486d27687d60c992abfad11b154ee62b4ba1bb65f43e90' 
  AND token = 'mvEVJYFbAlX5SOQ4RgrvlAQHibomvpOjHIkrbHNHplw=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00032

JSON explain

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