Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '1d5e9b5a9d887c85f8101cf762f1647fbf0a0fc678da9ec732bcaee5f508efae' 
  AND token = '8YTqAGOuciH9jCzGrX/lV0wac5XAA9KSoFRyY+ZPjls=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00030

JSON explain

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