Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '2fef22e4f72eb3312f98f30a32f6a76a77e8434ff775976a04da2220ef7b9036' 
  AND token = '1TZKOrW7PNJSPIChaj/ub3QfJNO47VnzFRfnEZ4i4xc=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00052

JSON explain

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