Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '055719b61ebb29690aa3b014f59237f10bb5d403bd9d91b92a62e50e5cbb36af' 
  AND token = 'od6f0vmwYgP1NONWxowOSt1oRbKqxX+qzyjmDziWlqo=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00037

JSON explain

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