Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '0aa8827bdd746c10859ad388533234bc9dd2b7b85fa700b29383cb271076320e' 
  AND token = 'IAUx4cVmfylJMmmFjkHPSX3pmANdetsOnqvbvr5cujQ=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00022

JSON explain

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