Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '102bfb049b9166594f9e88ff8c4c64770f236cc83fdd45b19a9227ab99340ccf' 
  AND token = 'cvQLRT4tsB3MqFnM4Mh9OwVNSV2eRnuuVR7p06sqo7g=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00028

JSON explain

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