Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '41ad4c8d3086485a9d7e197e06e8a692f0bde007466498436d90ceeceb04e655' 
  AND token = '0FrpOS8c28GKjpiDQBimAZ2OA/gDsc/ZPzHQruvM4xI=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00043

JSON explain

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