Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'dcd64dda974a7e8ee312b9d3c157d2225566a9eeea2ee707dc5ce664a5f06825' 
  AND token = 'YgiZEglmAbS2NB/qnpCpx7n6zo+drkerktpnXB8fOaA=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00032

JSON explain

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