Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '597e5e7d9ac31166fb62595c37427ed911d72a4f194bb96ec0969c9c719f1ab2' 
  AND token = 'yJGnHnXLjarQOyVvASxCAw8qh7zrw8k2VkzSOL5TXNE=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00031

JSON explain

{
  "query_block": {
    "select_id": 1,
    "message": "no matching row in const table"
  }
}