Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '0a17972e4ff03661f33fe8dc1c9d41937da307405bbf800ebee3e7dec0a8cf49' 
  AND token = '/EG5oABYbXKSK0DqOEyVlZ6S1QJ+ybScSOUv3bW/iB8=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00034

JSON explain

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