Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = 'a61c154d2f60fa0be7caf8ffb87f409e4003e93d193b9463e1079d62bb51cc72' 
  AND token = 'jAFXGLBk02Gqo9tZZ9bUZpvXRgp9hwp3cG149xDScSU=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00029

JSON explain

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