Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '3aaa40d12ba06f6fa050841e54a288009ace1a2b14050f4d1aef7098a32d59b1' 
  AND token = 'HkEFxHXO1R7MHuAUmUZhYPUPlm9T8aNbp7H1zc4De0g=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00021

JSON explain

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