Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '126c237ba025422536913f4b1252ac04e90eab0842147d95ec92cc4da814a0bc' 
  AND token = 'ztOs/14p2yU3vKDZfRjMpm8Se2JGb0VAg9OWKcd1OUk=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00036

JSON explain

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