Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '5a45988a0b3d135d363eae4aa6c494d269e43a1d7a0df775a155df71ce8d665a' 
  AND token = 'AK9QR5OOnm6V5ZNgTTt94tK3cEWkY69IZbLe6UXnfOw=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00036

JSON explain

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