Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '43bf817ebd26ba10d33a5fb6081454c65462ca06dfda76006a5c391adcb4f2fd' 
  AND token = 'NOdq/b2N/Q/ydSBHkykqeHenWicT8nmyeA4K+/kgc0M=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00030

JSON explain

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