Sandbox

SELECT 
  1 
FROM 
  vi_lock_keys 
WHERE 
  key_id = '3dba713025307e9ca8c5c7151af2fa5858443844ed954c2d011ab3f7c08b0f64' 
  AND token = 'SOm4LcJcIti1hnRYT6ZiNXrrjsPD2jvzqvdu6bDqkhc=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00008

JSON explain

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