Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '001ba3d630319c006e924243b488fdbbc87ad663920faa29c384b6e098a949c9' 
  AND token = '/llkdiiBGSKyt5+1O2PA2/ZLYlnpQdanFZb+lkGMkTs=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00043

JSON explain

{
  "query_block": {
    "select_id": 1,
    "table": {
      "message": "Impossible WHERE noticed after reading const tables"
    }
  }
}