Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '97afe8ac2f125ed5d5ad5e9482e6651a3ed35138c417d043e6fd9a195d5d3602' 
  AND token = 'idfus/xce1PFXjZ+pomjA2CuGw5LXA19uunaYZmkFBo=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00029

JSON explain

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