Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '1907fbd9793c4ebc026f1998ebf6cce8ec402eafa35c30b5f37c0d33940c4b07' 
  AND token = '3LAOGwwpOTB2uUZGqknWOGXjdsk/VTJS2m4V3m93eY0=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00015

JSON explain

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