SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '96fe3caed743c6a16c252e5f334ede655b5e517997870b57ebfad024dca314dd' 
  AND token = 'JGa7KkMZG0MtuCQQ4wZWEFvfp2wXLK4KeJMAvHpFgq0=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00032

JSON explain

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