Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '441e2bed8ddac97c9f6d0c8f1beec74bf8a243ef76fa5d411d11aeebdd2ce793' 
  AND token = 'ctxP76LiMM6adRprLqsrcw0/bNdESz/3P96IeSGt9j4=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00029

JSON explain

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