Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'b6677de083d6bf81d8cbe581272d567241133d939cdcc0b04de876a58664fe9f' 
  AND token = 'Azra5SCTA/N+m07VZF+yj/F6DXZFUvjOlKN7to7WdUo=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00016

JSON explain

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