Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '47fc368fdbf0bf89af65653d8478df34804e1fbe5c53d9f2ce7a6945564ff9e0' 
  AND token = 'bgkonxXcgUH5kHCvG+0k/iCMeyATZUOb5SlVWU87aMI=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00027

JSON explain

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