Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '9da43f8625add15bf11cf6e94574a7b23f74008402a0eb07fb4aeb631b020a19' 
  AND token = 'zjo9Byr10K6hLGsaqk/n1RC2dH3KsMw8TPLXBg/iz70=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00047

JSON explain

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