Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = 'e099df6dd625a83b7f4795618fa03bdfc5c199f7510b15fb9704cfbfe86ea54f' 
  AND token = '0kCyKGZOOobV5oOu7Xwr54hNrWpMNJglfaNSXbo7YzY=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00027

JSON explain

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