Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'd562016bedc0fe1c73f193a2e5ab961bcca9663533b2380705ff6250dc08e5af' 
  AND token = '7vqdXxmZdatzdnNgYxc+AftBLYlp85MltkL756Feh0w=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00019

JSON explain

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