Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '3922cc29619b97e55cc9c4c84c6fcf6c8d6183991d796f50c84c0f4688f17d9a' 
  AND token = 'Dn3lZyWkzgQzVt7p/ExSViOK6D9d3+R7DSPC3ueBais=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00029

JSON explain

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