Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'c95f7abcea08abf8c4b5b3b03999d8513f3472371036c95b8eebb449fdca5ea3' 
  AND token = 'EFWb9BYLdktn89TAJ/VjPl3izBRUnMYB5/4UPVfKBsc=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00048

JSON explain

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