Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '7d802c48a612f61ba6584bf2cc0b9c160fa80ed21d8517d55211765709e90dac' 
  AND token = 'G+mHKz4ovwmaecBHDCH41NJ9qt49NGtMYOYnG2i6jDc=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00053

JSON explain

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