Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '3327acdb76885dfe2d589d850a9cbf6a5a77ba0f46b300260d6b59c7df2e7a88' 
  AND token = '8phcuphqICHtTcGD9I+Vzye9HqMqnxeuBkKkxrxaeiA=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00017

JSON explain

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