Sandbox

SELECT 
  1 
FROM 
  cscart_multi_declock_keys 
WHERE 
  key_id = '60a0addb394f02f6bd29bd4297289dc85709632fa40db905d0e989bffe001bad' 
  AND token = 'VrCN0YGZ794MT9hENBb/DE4JRaknlFW+ySM6YY9FtTk=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00025

JSON explain

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