Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'f1fbd9708bc2ec1caef60524bd1b7ccc5f62ed9194758716eff061884606b4ee' 
  AND token = 'pGc2rP7VZEfreoydoPfhK+BSFKoGkD5zlkLaDUYJaDk=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00030

JSON explain

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