Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '3213eb73915125594dfa10876045e8a87017191a55a77f10e9f3dbb65b0de9f8' 
  AND token = '05OKuzRy8EGR7ekaCi0trqEzao4M5FgF8Ka+M8ccGf4=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00029

JSON explain

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