Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'c2614854ad19f644e7684ab6f523b16aa577b42eeca97f8f57aff94773b06d7c' 
  AND token = '7JpiauGcYlVfSWybAd6T+hZBkoz8hak7PqFEZtamoJI=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00040

JSON explain

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