Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = 'c02b387e2756dd43448d88cdc9eea841d6c89ba6faf1cc4af036d219e7c06882' 
  AND token = 'ZfyY96pTW6RN8XxqunIAtVAz3GBgGK2nar0rRIZLcRY=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00033

JSON explain

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