Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '343a69e406224a2207a46a1517c53204e240e20372095f9e3f1dd2b3d3a85db7' 
  AND token = 'Ij4NvpVnWmV0uSDNO0hxPbOKB8vteUUCKaWmWtduAaM=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00025

JSON explain

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