Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '706e1ab8afdea3bd2a811c6f348e74461564721e546d70dad93cc85c5f8225f8' 
  AND token = 'UUYIXqTCN9mVlD9GeOKurjPVXG3cm9sYY5tyLfvcdPM=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00048

JSON explain

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