Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = 'e8bbf479ca8095968cbf2296cae9a3fa97a324854435549e857427b1c38272f7' 
  AND token = 'ZKeU5KtknS0EcRUZDEsLIV/PnlevN5ONeMc0wXMbqaU=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00026

JSON explain

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