Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '223e63cb5b9475c872c31fe33779c89820cf6e9dcbb253148179b8cc356d7812' 
  AND token = 'n/bNtfUpGfitsn9yAPeYlRs/z67R1m2qVS5YlQQkqBI=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00036

JSON explain

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