Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '601ee421a1e56b56523fba245ba00718369ced0172a62de80eacd20bde8ab0c3' 
  AND token = 'faFR1HBeewA6NgHjRbPySeD1qgEFfeEi8u9oTVVVneU=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00019

JSON explain

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