Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'eab14ea5b55baa8edb7fe47ddb59ff647b2594769277f1105af88913fea9f850' 
  AND token = 'ymExU+d9Vv3Z9lhnWXd6K/ihpvTB/fnbxzsv38MdxGQ=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00033

JSON explain

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