Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '61ed572ada4e861554cfac37bb104374774374f97f794e3171e9e526a21c2012' 
  AND token = 'RnWH9hVtuxjn7P7aR7/NcrAyJvVwquqfPlS5BnIzwBs=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00019

JSON explain

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