Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '25901f201c6b66b1e0aeff154ae86bca98885db357bed3affaabdbc598017534' 
  AND token = 'B19FUlCTjO72xH6npIvM6I5xuK5p3gv39KBjdukVvpw=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00033

JSON explain

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