Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '9109e583ee95d3ae089f35cb75970589d114196353dfbf4faacb1edceacdf54f' 
  AND token = 'chwZ0UjX/rtqiOkR753I7f0neMWxuq/BFJcMoux1MbQ=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00044

JSON explain

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