Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '41a6fbefd6700bfcc1b8811d199a537f27878fdbf0942d52e7766d973d36e495' 
  AND token = 'V2hMdXk8oGZMoQrwE9Nl2mLZYMqokw92PN9A9ICrq/0=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00024

JSON explain

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