Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '0c2962dee922e1633d010ec0dbed4e79ac58855d43c4004e3bb6075181a1f748' 
  AND token = 'ceOwU7SWWt4eyP9WUpKDxny7/sXtbxKYPOIAbvrkKOg=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00041

JSON explain

{
  "query_block": {
    "select_id": 1,
    "table": {
      "message": "Impossible WHERE noticed after reading const tables"
    }
  }
}