Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '105a408a882ae88d0998fc76313630fa9c2a36ccd4a17f9d41913599baeb546d' 
  AND token = 'ksbDfDRtYsC73H+W9aPmB3wjKbAznWaf4KFwV8QjN+Y=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00037

JSON explain

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