Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '66fdef7aa0998736af61be6463b537438de7fde23bc492afcee52266f5f0961c' 
  AND token = 'XPRILkY18OmCqi2zEXb9rMOQ6a/8/8TlQB8f9eJnl6Y=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00025

JSON explain

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