Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'efafb32dd7dfb9ca47ad5fa5689c35a5929d97ccdc067416edad67285f2b8667' 
  AND token = 'TQuUC8MFvAhImGStWfWIUMBsS0ePZtgArOTFdebwHpU=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00037

JSON explain

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