Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '3be5e3e48a8838beb9c49d60c6e8616b779f56ca8b3dd56b3d618805d9fc1277' 
  AND token = '26EVYznV6ytdW4uvpBMHdj29/FhO7LFEvm8NnnpLZ4o=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00029

JSON explain

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