Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '6cc247466260e7c69d90fef3fce91cef5c14c2addbe2e4447b45c8ea5aa62174' 
  AND token = 'WUMjnpPa+odtEwWNixULCMSUHLJiPJjQDE/uvW4n6oM=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00037

JSON explain

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