Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '96badb3c4e2158f04efcb87f9536018eeb472400d028464885ba2eeef6783673' 
  AND token = 'RT+s1+LcVnAseA4QYI8yAI9l21u5ovIdboCHMQS0d/U=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00023

JSON explain

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