Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '9c6bb7b2abca0c74e2e280c3e8a22a5d564bb787b2d415d778fbe076e3b656e2' 
  AND token = '6hCSGhQ3f2dlhGWEJHyfMd3rJFMQnFp2A8L2jHaPOb8=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00031

JSON explain

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