Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '1395bf1ec7be25f0e935303432c8a0b9126ebf40453b97954504bfae8156974d' 
  AND token = '0EGog8G8hnvkYDvWpOIkTWWXmnpNP+dTXK8uAx7mtgw=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00018

JSON explain

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