Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'a005e6ea6cee522c788707f2dd6530b52509f4f5427a3cbf24546884252f0837' 
  AND token = 't97kAHP18NpcX3bYdBUqgD9JK8u6SwuOw+GAiDYmirE=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00018

JSON explain

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