Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'c32acdcb531a6df3b0545e58f2bb4e7ebc6f639e46502be792e7266ff09d3343' 
  AND token = 'XCcTU/LVWPCbH/+kkroV6TX5/4mgsALx+8gLcla0s5k=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00024

JSON explain

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