Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '54636d0e5e3e5b10b0925892cb758fe768789a4c6a3e0e1149e7f379ccda473d' 
  AND token = 'tve7J6VU0hf/VoPGBlw3tb4ax0ue1dmUPppilI775pU=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00031

JSON explain

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