SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '73f6ac0abde0acdbf7f53089e241f9ddb5e8ae4134a9d57523ba216391f26819' 
  AND token = 'dzPVmYc1BJ6QzkAxfMjHX/t3LUIaO8XcTkTnEEvXNog=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00032

JSON explain

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