Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '3e8bf62544a079be2bd0603cf693104235ceef49b7e6d439fee424eef49cb190' 
  AND token = 'sixnxhlkP1iF3MhtMlgt3kvt03G9QjQR6tJ6vu9/WIk=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00043

JSON explain

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