Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'df7054e073fc0399136b0515e7fc6732d13aace16909c86796d949bb95ce45b8' 
  AND token = 'yxH8L/Yiy3I63qFmyH3rrDQpxbWIrTfQcwyMBB3A+t8=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00015

JSON explain

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