Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '363a8c78b98cca8ba7d55c5e67f028821ecade273176621e93e0b2723a0a97a7' 
  AND token = 'iAPI6tK01JzRCJf3ee6/gcLThpnzUj+qC+yn3fvHf6U=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00028

JSON explain

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