Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '7d8c4ece9c52e584fd65387391d7b5f27e23a4cb38c1a538a4b7ba58ebf74fe7' 
  AND token = 'u/7fnH+R4RNvHS5q2o1TRN9GK+ii/ydJrpU1XGzQKnE=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00018

JSON explain

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