Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '1663afced0ae65eaa0d586f5379963d248a3e803757a0b5e78cc6205fcedda80' 
  AND token = 'OCz9kJYFeWl0kKKE1ronoHusK3N8oIBxeNNKFjfPmlc=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00021

JSON explain

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