Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '9e06efdba1f82b3446887dc8fe6ddb57e6fc4e0722c330156ae652134b4b896c' 
  AND token = 'HqjnTxqm3orU9nS+0VOn0hrb61xzByFMpZLTX9rxxUw=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00039

JSON explain

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