Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '9919ad67763fd5431d7c602e1d6b2a73b7193f23bc6c8f96a3746b99f890e091' 
  AND token = 'dcWLkEdC+QQLQdQXxnWiz46s9yR++O4myS3o9b9RXfM=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00018

JSON explain

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