Sandbox

SELECT 
  1 
FROM 
  cscart_june_setuplock_keys 
WHERE 
  key_id = 'c733038fd39d0a9642640af5e7c9682df6a001e3ca04402586f94fb0b4f9a4c5' 
  AND token = 'xIN/PZhDajeBz21R10UsTWBvvpdTjam20ydTCFHW4aw=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00172

JSON explain

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