Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'b8312ec0a4b39070b601c679468f53e5155b58f9b409adc27a4697ec6f8170d0' 
  AND token = 'jHbZZiH1XfWR65Kxnr76EuDVc7e6S899Wji7en9ZV4Y=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00118

JSON explain

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