Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = 'e38f92e64978249df1d1fc9274c63ac627ec2955742d90280c3ce82b15a74703' 
  AND token = 'z67nmnbhmPz7CwbfbaV9NhXOckOqhk22AyX9UBQT9NA=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00034

JSON explain

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