Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '6545fc72f9c497633dc8e82d9e8d91f6c416ce9dc13a281e3a92c861c7796d5e' 
  AND token = 'lbYWAYphrkQzltbtTroJooDqnxqWJPackOlwKh7ATU8=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00018

JSON explain

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