Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '1e1f0cddd2c02705053c9bf77236a8ec99d2a29f095f4c257f38229db1114e52' 
  AND token = 'u8vapo6SFNydLFMFjOfNCqQxWB4Utju2xDLDZyhAslM=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00042

JSON explain

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