Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'd2fdbba68527028a80790a3f46d759673cc13cc256561b1ad361c19017524464' 
  AND token = 'Ig11WXRyHlSxwQmY/orXeU0uWnUcOPfl9p9OazBDSKM=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00028

JSON explain

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