Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'ec346ef7babed625e3c01ba143ecaa84460b07aa14a186ca970776e379b794e0' 
  AND token = '4k6IzPifKh/6jI3Yakg4MhXqlxcjKzFBVbGhsTIrHqE=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00040

JSON explain

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