Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = 'acc64f959e0623f2e2d8d221c2a9d0f8d2263c5b2ffa943c1b7835aa5f24723e' 
  AND token = '2xHoe8lPLd1dafvRvw7zB1N8VB1nyfz0uFkXxtIevL8=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00031

JSON explain

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