Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '318b1dca1dc38d0e0cbbccf5035f07bf31bb0cca3188eccfe915fd4385590c53' 
  AND token = 'TwZAPJjDyI5VK8gO/xCBODEaNNt8YE2rJNsXAlkskhA=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00016

JSON explain

{
  "query_block": {
    "select_id": 1,
    "table": {
      "message": "Impossible WHERE noticed after reading const tables"
    }
  }
}