Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '839d30dd5d0c3178c52b3864b6c5200d07d4a1c0470e5c33c60375b5b4a2b433' 
  AND token = 'yUqM8celTH8XMf/rnubVWooqUWvQ/6GI/Ryb0P/scsc=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00030

JSON explain

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