Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'ec517f92bce92915f11d6e82d487363dbd6b1681b6c5b31a7bc862fdb58f1aad' 
  AND token = 'maXWchkeH/94zmANsPK/C0VWxVnxWxWHsn+B2D/g5pY=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00028

JSON explain

{
  "query_block": {
    "select_id": 1,
    "message": "no matching row in const table"
  }
}