Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = 'ee016f4691a6528614fe4023dc38595689129cae26bd683a62373721db153051' 
  AND token = 'nu4cn0elIgZ9XAq69PjhdIEN30JaxV0RcT30jqWqATk=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00035

JSON explain

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