Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '99e7f07c2176670320a4004a5966661828524f88b0bfbfc2b6c007510bcb9ea4' 
  AND token = 'ix9QkoCnFCoQJXpqGl1tbRQ0/5N2HHXCOBp3pnLXLnA=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00029

JSON explain

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