Sandbox

SELECT 
  1 
FROM 
  cscart_multi_declock_keys 
WHERE 
  key_id = '04d2720739306baddbc6fd416786045e785d305133a69b9e73cbf3e276091a4d' 
  AND token = 'sF8+ScaiBVwK68/c8Bk1p2GeweCEjNtEeSw9GYEjDko=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00027

JSON explain

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