Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'c985b0993217a7c256a2131621c30e7756cb3e3d7cbcefe8946f89bc86930f05' 
  AND token = 'wSXs3om/zSnixQiutXqj3XEJnXZxFVVNnDkgybQ4ybg=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00040

JSON explain

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