Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '26c8c3ed991fa00fdc512d9e142de56ed4e93cf1cffc861d4ee1b83c6f062672' 
  AND token = 'Ykv+h3salD0V7FLe2TMPv/4bXYJcCYugxW1AF8XM9x0=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00030

JSON explain

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