Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '947197ae705bab9c16c7a8cd2ee267c6f8128eaeff6d830e08a6d841da3d2723' 
  AND token = 'nPDW4NzPyfHxyGdqdfdjGNWx4u3U+jduSB5tzGm8AiI=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00035

JSON explain

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