Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '2af515dc186584ccfd87f8d5510307f245c10efff803a42f0058ca96bd0c927b' 
  AND token = 'VovI5RlURMl/2MWHZM8vddTOlcfw5I1zivk5F1vg/A0=' 
  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"
    }
  }
}