Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'c099ca9af0c33bfce72737ae26b37797135103443e88a3239c1c586be1e7f9d4' 
  AND token = 'nn7dkLhDomxg6tO7hb51X6Vzo+ULJROxv+hOrN4Gaog=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00032

JSON explain

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