Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = 'd52fc72f087a09a437ba0d19896b05b12f6417fa1e20c9346e0bf723d10cfe7e' 
  AND token = 'jHEW7ygsHErLtBw8gAt+jReQOWkYUhzACsHSbiW7gp8=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00022

JSON explain

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