Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'cb010d83611e8b8518f9142be6eab0b109204d9cc72962aa9382178823332e3b' 
  AND token = 'SPcZadaoEXBVh56pN6LbE3bH1rQh3aqx80bsck0FScw=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00044

JSON explain

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