Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '58fb48a17101f2cc081deb5c86c872e3c7368de04cb5b1b73cf48a0e1922c37b' 
  AND token = 'R0nkGa7xrvzivmNbH5EQX1PPZxu/fzjx1Q540ww5Xd8=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00052

JSON explain

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