Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '41370d59355c7201e4f98d085ffd8522f16d7a497d5a1dcbf6d4eda186fe8a9d' 
  AND token = 'dy2DDPmrWEZST6HEMCzXW/tP7CCadwE5J4+vRzFBric=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00021

JSON explain

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