Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '7e60919891115194f069923d1315baa9eac2e70ef41f77195decfa21a8e11fb9' 
  AND token = 'J/Au91u/H+vuSECPVrCbMjr+7NhncPcqcI1jFFi8rqA=' 
  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"
    }
  }
}