Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '33ff1531b3f7c16b3d88b0ed64bbea7624bbe348c7bafb17396b2748155def9d' 
  AND token = 'qI53WsC2dO4iVfe2WTRFQjORm8mypMAER+CI2PGXaVc=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00041

JSON explain

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