Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '3bd43f93ea1db221cd188d53915fd77080bad6d5f1712a27557feb6ef006c6f5' 
  AND token = '7H7daicLVN1MvOKtkUXl2E0bUJXgcHn+pakEVhPot0I=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00028

JSON explain

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