Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '579aec062fb97120235333682cd741b820a28ceee6b96dcfb4aaef7e1b6d4035' 
  AND token = '77oB/2Nm9F8DG0QBXuyHW+Z3iAafc4RlJkGHY0mKGSA=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00047

JSON explain

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