Sandbox

SELECT 
  1 
FROM 
  cscart_june_setuplock_keys 
WHERE 
  key_id = '33000163a97d3482864ea33630b639cd19f14c3ae63b9396a68ac088ef0c34ab' 
  AND token = 'V+aQSGBDHpxKI47YOVCegq4D05/hhp7qfkR0ha0mxm4=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00033

JSON explain

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