Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '69e9f365eb558f59474b90c3058b01a6122f8e92677ae5ea94b76adab26f14e0' 
  AND token = 'RebE3RJ06mY+3u5ndkFjD7EjufPZMfMr6QimWhu5pDw=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00035

JSON explain

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