Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '67af1d2b97727a6ff1b60b889b3f4fb761694fc8bf44a999953a201411536ab5' 
  AND token = 'LZOJfF5Sbq+Lh/0TsfhAlVXLne/WXRfdJ6sRsaY+pss=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00022

JSON explain

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