Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '42dd867fc03527294a15f632535b5acb91b83061a7ef2bb4c7ad5b504ee90c8c' 
  AND token = 'zmiXA+fuXlwn/Jpq52bxn5pBFE5qv2pEJyDFHv/DALU=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00050

JSON explain

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