Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '195a8c49ec1898d99450758d8d463349cbeb94ad1af51fb8ead299732482f60b' 
  AND token = 'hWxm9oPNq/gAeyypKFcuDKJsjzftKJFD56/DsiFFLv0=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00018

JSON explain

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