Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'd95b225a930cd47cb7cf42ae24312f70a81d326caf58e273f7220b758d79d5eb' 
  AND token = 'GN3OO0zgGWO7Srs4SCI4KyEPKkmYD/lCKcYPKmUcTQI=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00021

JSON explain

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