Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '3de38045a7ce29ed88f43ee860bfa6ff0c49111f34430b9a4693c6dc72b726e2' 
  AND token = 'LOE1jB0hxu8eb8bFMqF9tpApIKjxZ1pojC7HX9qS+o4=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00032

JSON explain

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