Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '3eaa74643891ab2174bd2b85e407792f4a0077cd07b109044903b63c7fc80730' 
  AND token = 'FeWtVJgjWPy0jXJ5j0FMeGzxQ9GHDxCaCJjchzW5D64=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00032

JSON explain

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