Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'a9f46e38e6c33aa2453f03f742582a097e7176b61e088b3b7d4d310508abbe36' 
  AND token = 'VNSvdc26MQiDbGdNNlJp/z72ZwdPDoatmrw+wZlaOQc=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00041

JSON explain

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