Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '3ff17e86e25f4190ec79adc32f769de422058552632ba97bed200e4d50d74b0e' 
  AND token = '+82xtEMwJw02iNLAGaOyDsWdgQ1FGYphdxrjtO57Ook=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00028

JSON explain

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