Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'ecc96b503148c65aca9a88e249ab39a8993946c81262de22ff1c994153b24f26' 
  AND token = 'GR7DanWpCKvhsPDtERxCd60aRKW+DUWDeQVKMeLbyjs=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00017

JSON explain

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