Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '1481c982070b9112b69786a8483c1f72f6cae64287241190cc856ada7ff53f54' 
  AND token = 'd6cpP1M3DFIi43nyferRLz5rDZFgdZLU53YVwR5QNHw=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00028

JSON explain

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