Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'ac6cc375b7204ce64d1bda26dbefdc826fcbf0cab31e13d10b0bf08621abeaa6' 
  AND token = 'YK1X4fl2jPNImqc03p9XX1krmC9y3RDWa4bLtSgLNMo=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00030

JSON explain

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