Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '46d4814b24693ca8421576751958cfea87be825ca1d7f08393a2f44dabd153d8' 
  AND token = 'M22Ds3v/WLczwTxJ5iswNuB0dZESow46/i9YFRRNgyI=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00057

JSON explain

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