Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '82e6ed8875edc4ece8bd691ab80437afe19f5fe0348882efcc3251a8104b7488' 
  AND token = 'ENju6LFkZLgZALKZaWugyBDCO9rB/x5J3B/vsTrB+bg=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00019

JSON explain

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