Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'b89d2d75926715f36719cc9be2713521865c75b1e433f1945bc416d217ddb686' 
  AND token = '26dQXpa7F9GovP6r1QX/f6D3Mf0veM9pDx294AKh7P8=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00018

JSON explain

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