Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '087c379811dd48f8b776d456d9a7ace4073a23a5c3e432fd3477cb44faeafcf3' 
  AND token = '8HGuQNCWJI8Xbmaow6UAq30qRtsnkg//tFuRpTEMPeI=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00017

JSON explain

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