Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '69e7590d6c0c0f35af8fe8a4cac986fea5c91a5eb3efe185db36bd249f43ab6e' 
  AND token = 'PbxbL8bQSXpGVb85Mg1W5484ig8B3VO51ql+vLltf3Y=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00035

JSON explain

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