Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = 'a95cc8c583e20f3f3d0fdc1765f1cd2f13d57f8a0ca91e09c9d3b9abb6cd2ee4' 
  AND token = '3ONbJOXyA6WZO+b/SP6JQRaUk9pajHZg74Ticl2aVaI=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00021

JSON explain

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