Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '0bb582b1e4bc4a747a80de19248cc41fd336643856e13475c214162253be9b39' 
  AND token = 'hA3CdP791RQHgKFToSGTo6xuQxYUUxccARrcXsfwlls=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00019

JSON explain

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