Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'cb39f243cfc2579e3a630442af62c7e4c2c5b07911b764ecd51f0c5ec6413c5b' 
  AND token = 'EVrE1D7AP5ZNgXvcMrSi5GjRrXXTrMc4nLspsdhPx/c=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00014

JSON explain

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