Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'db3bc04188771539c7ebb573bd617340a46361e2f0b5473a70baf6b29f82bae9' 
  AND token = 'om0T/DqhWLrpER0X8hzcdGqx3pdD/0Kz68j4azrsWL0=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00014

JSON explain

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