Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '4551eea32fdc793f64dd5db268e5f72b1576cc42ed461aa4fb72a2cc3f900fd9' 
  AND token = 'LPX/nd2vkhUn27xwLNq1qbktckmVmjkFGhzfBlRF1Ak=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00028

JSON explain

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