Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '3274adc1dea64e312ac85637139b943784672af5e34a4a707ddf41ccd6aea68f' 
  AND token = 'ouD3A4edCblcb1e+4SjGTbwoJ85TZlGCR6J0MqMMNSM=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00037

JSON explain

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