Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '08084e80606b920a40ae592d08ae1ee3df30543984c67742a738ae6f214ddaec' 
  AND token = 'TczcST8rHs+2pMgNckkim2hEYZLWW6TE1VV3e94Hrmg=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00022

JSON explain

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