Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'f26b32236ae276bf138ba3be9edb5480d32ba5f897ce22ef8a68a25d62d3f326' 
  AND token = 'ayTEkG6d6S+F1cq+9t2KiJR2s+eK9mlL92wZomFBSqs=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00022

JSON explain

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