Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'c0d8fcded98f0ee63a633fa90814c39f59b88ab30601e6235903512c9c128085' 
  AND token = 'fuv7WQapdtMWiG+plx+DjvuNOG7M12h7ciC+rHJZ62A=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00018

JSON explain

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