Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '6a919d12b7230fe830c5b32785f3c3e7d276694520429350790ab4908e408ed2' 
  AND token = 'IGoJXnAyQTNNuAxXKvFmFzhOtfoMTE21I01jLTZcuEs=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00029

JSON explain

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