Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '845f3f78358c9752e06a80232204cd9a95b3a6413112bae52dc859b7abb422e9' 
  AND token = '8is2wo+nHTInFnDQffxI8eOe3Atm8+sGX6QXJLwFfiI=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00034

JSON explain

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