SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '1fc8e29e23b0157e1e608297a81e40b0ee2123fb6837e7e1096f661d50bc6ef9' 
  AND token = 'GgIksq4oKJGX02uKlczPqwlJtF//BSLp17EidNPVBgw=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00027

JSON explain

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